GROWTH AND MICROSTRUCTURE OF SUPERCONDUCTING YBA2CU3OX SINGLE-CRYSTALS

被引：205

作者：

KAISER, DL

HOLTZBERG, F

CHISHOLM, MF

WORTHINGTON, TK

机构：

[1] IBM, Yorktown Heights, NY, USA, IBM, Yorktown Heights, NY, USA

来源：

JOURNAL OF CRYSTAL GROWTH | 1987年 / 85卷 / 04期

关键词：

CERAMIC MATERIALS - CRYSTALS - Microstructure - MICROSCOPIC EXAMINATION - Scanning Electron Microscopy - YTTRIUM COMPOUNDS;

D O I：

10.1016/0022-0248(87)90028-5

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We have developed a technique for growing free-standing, well-formed YBa//2Cu//3O//x single crystals from melts in the YBa//2Cu//3O//x-BaCuO//2-CuO pseudoternary system. The crystals are rectangular prisms with the smallest dimension parallel to the c-axis of the unit cell. Fine-scale transformation twins are formed during cooling through the tetragonal-to-orthorhombic phase transition. Superconducting transitions of crystals annealed in oxygen (1 atm) at 420 degree C typically occur at 92 K with a width of 0. 2 K.

引用

页码：593 / 598

页数：6

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